In my opinion, the Chosun Ilbo is the best (see KK's link above), simply because it tries to present both sides of various issues in its coverage and editorials, especially regarding the recent anti-Americanism. I'm no fan of the U.S. military, but the amount of spurious negative coverage in the Herald and Joongang Ilbo towards the U.S. has turned me right off of reading them. Of course the Herald is garbage anyway (with the big exception of Cho Se-hyon's Seoul Searcher articles), but the Korea Times isn't much better.

The Chosun Ilbo is conservative, but oddly enough it's the more "liberal" papers here who have problems with fairness and accuracy.